Sou Hu Cai Jing·2025-12-02 01:43Core Insights - China Petroleum & Chemical Corporation (Sinopec) and Sinopec Shanghai Petrochemical Company have obtained a patent for a "metal membrane dust removal device and its working method" with the announcement number CN116020207B, applied for on October 2021 [1] Company Overview - China Petroleum & Chemical Corporation was established in 2000 and is based in Beijing, primarily engaged in oil and gas extraction. The company has a registered capital of 12,173,968.9893 million RMB. It has invested in 268 companies, participated in 5,000 bidding projects, holds 45 trademark registrations, 5,000 patents, and possesses 41 administrative licenses [1] - Sinopec Shanghai Petrochemical Company was founded in 1993 and is located in Shanghai, focusing on the oil, coal, and other fuel processing industries. The company has a registered capital of 1,079,928.55 million RMB. It has invested in 22 companies, participated in 5,000 bidding projects, holds 51 trademark registrations, 1,331 patents, and has 12,789 administrative licenses [1]